Write three distinguish feature of phylum Echinodarmata. Give one example.
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Main features of Echinoderms which help to distinguish them from other phylum are,
1)Spiny bodied(Endoskeleton with calcareous ossicles)
2)Water vascular system
3)Mouth on lower(ventral) anus on dorsal side.
In addition to these, adult echinoderms are radially symetrical and exclusively marine animals.
Examples: Asterias,Ophiura
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1)Spiny bodied(Endoskeleton with calcareous ossicles)
2)Water vascular system
3)Mouth on lower(ventral) anus on dorsal side.
In addition to these, adult echinoderms are radially symetrical and exclusively marine animals.
Examples: Asterias,Ophiura
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Echinodermata
•they are unsegmented,marine an imals.
•they have an exoskeleton and a spiny surface.
•they move by means of tube-feet.
•they are radially symmetrical,i. e,they have similar parts(usually five)arranged regularly around a central point..
•Examples are starfish,brittle star, sea urchin,sea cucumber....
•they are unsegmented,marine an imals.
•they have an exoskeleton and a spiny surface.
•they move by means of tube-feet.
•they are radially symmetrical,i. e,they have similar parts(usually five)arranged regularly around a central point..
•Examples are starfish,brittle star, sea urchin,sea cucumber....
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